1655. 6-3/4" long, this set of unidentified instruments was found in Yugoslavia and was sent in by a visitor who would like to know how they were used:The top four are labeled 32, 30, 23 and 19. Each of them has a small rotating geared wheel at the tip. The largest wheel is on the #30 instrument, the #23 is smaller, and the #19 is smaller that the #23. The top one, #32 is somewhere in-between, and is configured differently, looking somewhat like a pen. The tool at the bottom has a point on one end and a small ball on the other.

1642. 1-7/8" long, take a look at Neatorama for more guesses on this one, and a chance to win a Camaro Wireless Mouse.

1643. Submitted by a visitor who is looking to find the exact purpose for this device:

It's about 26" long, the bronze part is either cast or brazed to a piece of heavy walled 3/4" pipe. Inside the handle is an old style micro switch and it appears that the wires would have been fed down through the pipe.